Barrel nut

Cold heading process is one of the new processes for pressure machining of less or no cutting
metal. lt is a processing method that utilizes the plastic deformation of metal under the action of
external forces, and with the aid of molds, redistributes and transfers the volume of metal to form
the required parts or blanks. The cold heading process is most suitable for producing standard
fasteners such as bolts, screws, nuts, rivets, and pins.etc

A barrel nut (also known as a cross dowel, spine nut, or binding post) is a fastening component designed to provide strong and secure joints in various applications, including furniture, aerospace, automotive, and mechanical assemblies. It consists of a short, cylindrical metal body with an internally threaded hole, allowing it to receive a bolt or screw.

1. Design and Features

• Shape: Cylindrical or slightly elongated, sometimes with flanges or slots for improved grip.
• Internal Threading: The hole inside the barrel nut is threaded to accommodate a bolt or machine screw.
• Material: Typically made from steel, stainless steel, brass, aluminum, or titanium, depending on the strength and corrosion resistance required.
• Size Variations: Comes in different diameters, thread sizes, and lengths to fit specific applications.
• Orientation: The internal threading is usually perpendicular to the length of the barrel, but some designs allow parallel alignment.

2. Types of Barrel Nuts

(A) Based on Shape and Structure:

1. Standard Barrel Nut: A simple cylindrical body with internal threading, used in furniture and general fastenings.
2. Cross Dowel (Perpendicular Barrel Nut): The bolt passes perpendicular to the nut, commonly found in furniture joints.
3. Flanged Barrel Nut: Has an extended flange at one end for better load distribution and stability.
4. Slotted Barrel Nut: Includes a slot or screwdriver groove for easy tightening and alignment.
5. Binding Post (Chicago Screws): Consists of a male and female part, often used in bookbinding and leather products.